[LDPE] Questions

[Nils Schmidt]

Hi guys,
I haven't been here a while and I just started using LDPE. I have installed it, played with it a bit, but I have some questions. I have found some documentation which has answered some of my initial questions but there's one thing I can't figure out: how do I use Intersecter from within LDPE? I've found it on the Tools menu, but I can't figure out how to pass it the two files/ shapes I want to intersect.
It's probably very simple once you know....
Thanks!

Hi Ronald,

as Philo already had mentioned, it would be sometimes better to just use "Isecalc" to generate the intersection lines and do the triangulation manually.

But still, here is a simple example with a quad and two cylinders.
In reality an author would probably use two 4-4ndis to "cut" the holes and do the triangulation around the two holes manually with less triangles and quads.

Code:

0
0 Name: new.dat
0 Author: Nils Schmidt [BlackBrick89]
0 !LDRAW_ORG Unofficial_Part
0 !LICENSE Licensed under CC BY 4.0 : see CAreadme.txt

0 BFC CERTIFY CCW

0 // Select this quad and keep it selected
4 10 2 0 -2 2 0 6 -2 0 6 -2 0 -2

1 14 0 -1 0 1 0 0 0 2 0 0 0 1 4-4cyli.dat
1 14 0.5 -1 3 1 0 0 0 2 0 0 0 1 4-4cyli.dat

0 // When running "Intersector" in LDPE, it will generate this and the quad will be deleted:

3 10 -.5 0 3 1.5 0 3 1.4239 0 3.3827
3 10 1.2071 0 3.7071 1.4239 0 3.3827 2 0 6
3 10 -.5 0 3 1.4239 0 3.3827 1.2071 0 3.7071
3 10 .8827 0 3.9239 1.2071 0 3.7071 2 0 6
3 10 -.5 0 3 1.2071 0 3.7071 .8827 0 3.9239
3 10 .5 0 4 .8827 0 3.9239 2 0 6
3 10 -.5 0 3 .8827 0 3.9239 .5 0 4
3 10 .1173 0 3.9239 .5 0 4 2 0 6
3 10 -.5 0 3 .5 0 4 .1173 0 3.9239
3 10 -.2071 0 3.7071 .1173 0 3.9239 2 0 6
3 10 -.5 0 3 .1173 0 3.9239 -.2071 0 3.7071
3 10 -.5 0 3 -.2071 0 3.7071 -.4239 0 3.3827
3 10 -2 0 6 -.4239 0 3.3827 -.2071 0 3.7071
3 10 -2 0 6 -.5 0 3 -.4239 0 3.3827
3 10 -2 0 6 -.4239 0 2.6173 -.5 0 3
3 10 1.5 0 3 2 0 -2 2 0 6
3 10 -2 0 -2 2 0 -2 -.3827 0 -.9239
3 10 .5 0 2 .9239 0 .3827 2 0 -2
3 10 -2 0 6 -.2071 0 3.7071 2 0 6
3 10 -2 0 -2 -1 0 0 -2 0 6
3 10 -2 0 6 0 0 1 -.4239 0 2.6173
3 10 -.5 0 3 -.4239 0 2.6173 -.2071 0 2.2929
3 10 -.4239 0 2.6173 .9239 0 .3827 -.2071 0 2.2929
3 10 -.5 0 3 -.2071 0 2.2929 .1173 0 2.0761
3 10 -.2071 0 2.2929 .9239 0 .3827 .1173 0 2.0761
3 10 -.5 0 3 .1173 0 2.0761 .5 0 2
3 10 .1173 0 2.0761 .9239 0 .3827 .5 0 2
3 10 .9239 0 .3827 1 0 0 2 0 -2
3 10 -1 0 0 1 0 0 .9239 0 .3827
3 10 .5 0 2 2 0 -2 .8827 0 2.0761
3 10 -.5 0 3 .5 0 2 .8827 0 2.0761
3 10 -1 0 0 .9239 0 .3827 .7071 0 .7071
3 10 -.4239 0 2.6173 .7071 0 .7071 .9239 0 .3827
3 10 .8827 0 2.0761 2 0 -2 1.2071 0 2.2929
3 10 -.5 0 3 .8827 0 2.0761 1.2071 0 2.2929
3 10 -1 0 0 .7071 0 .7071 .3827 0 .9239
3 10 -.4239 0 2.6173 .3827 0 .9239 .7071 0 .7071
3 10 1.2071 0 2.2929 2 0 -2 1.4239 0 2.6173
3 10 -.5 0 3 1.2071 0 2.2929 1.4239 0 2.6173
3 10 -1 0 0 .3827 0 .9239 0 0 1
3 10 -.4239 0 2.6173 0 0 1 .3827 0 .9239
3 10 1.4239 0 2.6173 2 0 -2 1.5 0 3
3 10 -.5 0 3 1.4239 0 2.6173 1.5 0 3
3 10 -2 0 6 -.3827 0 .9239 0 0 1
3 10 -1 0 0 0 0 1 -.3827 0 .9239
3 10 -2 0 6 -.7071 0 .7071 -.3827 0 .9239
3 10 -1 0 0 -.3827 0 .9239 -.7071 0 .7071
3 10 -1 0 0 -.7071 0 .7071 -.9239 0 .3827
3 10 -2 0 6 -.9239 0 .3827 -.7071 0 .7071
3 10 -2 0 6 -1 0 0 -.9239 0 .3827
3 10 -1 0 0 -.9239 0 -.3827 -.7071 0 -.7071
3 10 -2 0 -2 -.9239 0 -.3827 -1 0 0
3 10 -2 0 -2 -.7071 0 -.7071 -.9239 0 -.3827
3 10 -2 0 -2 -.3827 0 -.9239 -.7071 0 -.7071
3 10 -1 0 0 -.7071 0 -.7071 -.3827 0 -.9239
3 10 -.3827 0 -.9239 2 0 -2 0 0 -1
3 10 -1 0 0 -.3827 0 -.9239 0 0 -1
3 10 0 0 -1 2 0 -2 .3827 0 -.9239
3 10 -1 0 0 0 0 -1 .3827 0 -.9239
3 10 .3827 0 -.9239 2 0 -2 .7071 0 -.7071
3 10 -1 0 0 .3827 0 -.9239 .7071 0 -.7071
3 10 .7071 0 -.7071 2 0 -2 .9239 0 -.3827
3 10 -1 0 0 .7071 0 -.7071 .9239 0 -.3827
3 10 .9239 0 -.3827 2 0 -2 1 0 0
3 10 -1 0 0 .9239 0 -.3827 1 0 0
3 10 1.4239 0 3.3827 1.5 0 3 2 0 6